<ul class="nav" id="side-menu">
    <li>
        <a href="/index"><i class="fa fa-dashboard fa-fw"></i> 首页</a>
    </li>
    <li>
        <a href="/account">
            <i class="fa fa-user-md fa-fw"></i> 账户管理
        </a>
        <!-- /.nav-second-level -->
    </li>
    <li>
        <a href="#">
            <i class="fa fa-building fa-fw"></i> 文件管理
        </a>
        <ul class="nav nav-second-level">
            <li>
                <a href="/upload"> 上传文件</a>
            </li>
            <li>
                <a href="/list"> 文件列表</a>
            </li>
        </ul>
        <!-- /.nav-second-level -->
    </li>
    <li>
        <a href="/friends">
            <i class="fa fa-check fa-fw"></i> 我的好友
        </a>
        <!-- /.nav-second-level -->
    </li>
</ul>